Early orbit operations performance of the Suomi NPP OMPS instrument

Matthew Kowalewski; Chunhui Pan; Scott Janz

doi:10.1117/12.929753

15 October 2012 Early orbit operations performance of the Suomi NPP OMPS instrument

Matthew Kowalewski, Chunhui Pan, Scott Janz

Proceedings Volume 8510, Earth Observing Systems XVII; 851007 (2012) https://doi.org/10.1117/12.929753
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

The Ozone Mapping Profiler Suite (OMPS) was launched aboard the Suomi National Polar-orbiting Partnership (Suomi NPP) spacecraft on October 28, 2011. OMPS is meant to continue NOAA/NASA's long-term ozone data record and bridge the gap to the Joint Polar Satellite System (JPSS) missions later this decade. We present results from the OMPS Nadir and Limb sensors' early orbit checkout (EOC) operations with comparisons to pre-launch thermal vacuum tests. Characterization measurements of detector performance show that offset, gain, and read noise trends remain within 0.2% of the pre-launch values with significant margin below sensor requirements. Nadir Total Column detector dark generation rate trends show a slow growth in both halves of the focal plane as compared to initial on-orbit measurements. Nadir solar calibration measurements remain within 2% of the initial in-flight observation and indicate no spatially dependent change to within 1%. Limb Profiler solar calibration trending indicate a potential goniometry correction error as high as 5%. Spectral registration changes based on solar observations are determined to be less than one pixel for the Nadir Total Column and Limb sensors but approximately one pixel for Nadir Profiler. Preliminary comparisons to Thullier reference solar spectral irradiances show wavelength dependent differences greater than 5%.

Citation Download Citation

Matthew Kowalewski, Chunhui Pan, and Scott Janz "Early orbit operations performance of the Suomi NPP OMPS instrument", Proc. SPIE 8510, Earth Observing Systems XVII, 851007 (15 October 2012); https://doi.org/10.1117/12.929753

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